<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .zong{
            height: 615px;
            width: 1240px;
            margin: 0 auto;
        }
        .zong-big{
            height: 615px;
            width: 234px;
            background-color: #800080;
            float: left;
            margin-right: 14px;
        }
        .zong-sm{
            height: 300px;
            width: 234px;
            float: left;
            background-color: #87ceeb;
            margin: 0 14px 14px 0;
        }
        .zong-smx{
            height: 300px;
            width: 234px;
            float: left;
            background-color: #87ceeb;
            margin: 0 14px 0 0;
        }
    </style>
</head>
<body>
    <div class="zong">
        <div class="zong-big"></div>
        <div class="zong-sm"></div>
        <div class="zong-sm"></div>
        <div class="zong-sm"></div>
        <div class="zong-sm"></div>
        <div class="zong-smx"></div>
        <div class="zong-smx"></div>
        <div class="zong-smx"></div>
        <div class="zong-smx"></div>
    </div>
</body>
</html>